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Math 3 Statistics
| Question | Answer |
|---|---|
| The entire group of individuals we want information about is called the ______. | population |
| The subset of the population we actually examine in order to gather information is called the ______. | sample |
| Studying the whole population by contacting every individual is called a _____. | census |
| Studying a population by taking a subset of it in order to generalize to the whole population is called _____. | sampling |
| If a radio station invites anyone who wants to call and give an opinion on a question, the set of people obtained is called a _____ response sample. | voluntary |
| If the researcher enrolls a group of people in the study on the basis of how easy it is to contact them and get them to enroll, that method of sampling is called ______ sampling. | convenience |
| The systematic error introduced when the sample is very different from the population is called _____. | bias |
| An SRS (simple random sample) is a subset of n individuals from a population chosen in such a way that ___________. | Every subset of n individuals as an equal chance of being chosen for the sample. |
| Suppose I write the numbers 1, 2, 3, and 4 on identical pieces of paper, put them in a hat and mixed them thoroughly and draw out two numbers. Is this a SRS of the 4 numbers? | Yes |
| Sampling public high schools will leave out various other types of students. The general term for such a problem in sampling is _____. | undercoverage |
| When you get a survey in the mail and toss it in the trash, the source of bias this introduces into the survey is called _____. | nonresponse |
| When a survey question is "leading" this is called _____ bias. | wording |
| A study in which we actually impart a treatment to subjects, animals, or objects in order to learn about the response is called an _____. | experiment |
| A pill that is made of inactive material which is used so that subjects can have information withheld about which treatment group they are in is an example of a _____. | placebo |
| If you want evidence for causation, do you choose an observation or an experiment? | experiment |
| When people get better from an inactive treatment, that is called the ______ effect. | placebo |
| A group of individuals who receive an inactive treatment, so that the effects of a possibly active treatment can be contrasted with those of inactive treatment, is called the ______ group. | control |
| Making a model that accurately reflects the experiment under consideration and imitating chance behavior based on tat model is called doing a ______. | simulation |
| True or False. You want to simulate a 30% chance of an event. You assign the digits 0, 1, 2, 3 to the success of the event and the digits 4 - 9 to the failure of the event. | False. You should only assign three digits to the success. |
| Any numerical value that comes from data collected from a population is called a ______. | parameter |
| Any numerical value that comes from data collected from a sample is called a _____. | statistic |
| The symbol for a population mean is _____. | μ (mu) |
| The symbol for a sample mean is _____. | x ̅ (x-bar) |
| The symbol for a population proportion is _____. | p |
| The symbol for a sample proportion is _____. | p ̂ (p-hat) |
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